Principles and Applications of Radio Frequency Impedance Probes

Principles and Applications of Radio Frequency Impedance Probes
Author: Shu Tim Lai
Publisher:
Total Pages: 30
Release: 1981
Genre: Impedance (Electricity)
ISBN:
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The underlying principle of the radio frequency plasma probe is presented. The resonance properties of the probe's equivalent circuit with and without external magnetic field are analyzed. The admittance of the equivalent circuit is shown to posses a pole at the sheath hybrid frequency and a zero at the upper hybrid frequency. The phase of the admittance changes signature to become negative, in the range of frequency between the pole and the zero. Some significant experiments using radio frequency plasma probe for ionospheric research are briefly described.

Principles and Applications of Radio Frequency Impedance Probes

Principles and Applications of Radio Frequency Impedance Probes
Author: Shu Tim Lai
Publisher:
Total Pages: 0
Release: 1981
Genre: Impedance (Electricity)
ISBN:
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The underlying principle of the radio frequency plasma probe is presented. The resonance properties of the probe's equivalent circuit with and without external magnetic field are analyzed. The admittance of the equivalent circuit is shown to posses a pole at the sheath hybrid frequency and a zero at the upper hybrid frequency. The phase of the admittance changes signature to become negative, in the range of frequency between the pole and the zero. Some significant experiments using radio frequency plasma probe for ionospheric research are briefly described.

Radio-Frequency Heating in Food Processing

Radio-Frequency Heating in Food Processing
Author: George B. Awuah
Publisher: CRC Press
Total Pages: 414
Release: 2014-12-04
Genre: Technology & Engineering
ISBN: 1439837058
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Radio-Frequency Heating in Food Processing: Principles and Applications covers the fundamentals of radio-frequency (RF) heating and the use of RF-heating technologies in modern food processing, preservation, and related industries. Focusing on industrial and lab-scale applications where RF heating has been employed successfully or reported to have

Principles and Applications of RF/Microwave in Healthcare and Biosensing

Principles and Applications of RF/Microwave in Healthcare and Biosensing
Author: Changzhi Li
Publisher: Academic Press
Total Pages: 343
Release: 2016-10-05
Genre: Technology & Engineering
ISBN: 0128092181
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This reference, written by leading authorities in the field, gives basic theory, implementation details, advanced research, and applications of RF and microwave in healthcare and biosensing. It first provides a solid understanding of the fundamentals with coverage of the basics of microwave engineering and the interaction between electromagnetic waves and biomaterials. It then presents the state-of-the-art development in microwave biosensing, implantable devices -including applications of microwave technology for sensing biological tissues – and medical diagnosis, along with applications involving remote patient monitoring. this book is an ideal reference for RF and microwave engineer working on, or thinking of working on, the applications of RF and Microwave technology in medicine and biology. Learn: The fundamentals of RF and microwave engineering in healthcare and biosensing How to combine biological and medical aspects of the field with underlying engineering concepts How to implement microwave biosensing for material characterization and cancer diagnosis Applications and functioning of wireless implantable biomedical devices and microwave non-contact biomedical radars How to combine devices, systems, and methods for new practical applications The first book to review the fundamentals, latest developments, and future trends in this important emerging field with emphasis on engineering aspects of sensing, monitoring, and diagnosis using RF and Microwave Extensive coverage of biosensing applications are included Written by leaders in the field, including members of the Technical Coordinating Committee of the Biological Effects and Medical Applications of the IEEE Microwave Theory and Techniques Society

Electrical Impedance

Electrical Impedance
Author: Luca Callegaro
Publisher: CRC Press
Total Pages: 312
Release: 2012-11-06
Genre: Technology & Engineering
ISBN: 1439849102
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Electrical Impedance: Principles, Measurement, and Applications provides a modern and much-needed overview of electrical impedance measurement science and its application in metrology, sensor reading, device and material characterizations. It presents up-to-date coverage of the theory, practical methods, and modeling. The author covers the main impedance measurement techniques, stressing their practical application. The book includes a large set of measurement setup schematics, and diagrams and photos of standards and devices. It also offers an extensive list of references to both historical and recent papers on devices, methods, and traceability issues. Reviews the main definitions of the quantities related to impedance, some theorems of particular interest, the issue of impedance representation, and introduces the problem of impedance definition Lists devices, appliances, circuits, and instruments employed as building blocks of impedance measurement setups Classifies the main impedance measurement methods, including details on their implementation when a specific impedance definition is chosen Discusses the increasing use of mixed-signal electronics in impedance measurement setups Covers applications including details on the measurement of electromagnetic properties of materials Introduces impedance metrology, including artifact impedance standards, and the realization and reproduction of SI impedance units

Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
Author:
Publisher:
Total Pages: 1282
Release: 1982
Genre: Aeronautics
ISBN:
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Moment Method Solutions for the Impedance of Asymmetrically Driven RF Probes in the Collisional Ionospheric Magnetoplasma

Moment Method Solutions for the Impedance of Asymmetrically Driven RF Probes in the Collisional Ionospheric Magnetoplasma
Author: Hyun-Shik Hwang
Publisher:
Total Pages: 176
Release: 1974
Genre:
ISBN:
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In order to ascertain the electron density in the earth's ionosphere by direct measurement a radio frequency (RF) impedance probe technique has proved useful. This technique involves monitoring the changes in impedance of an antenna mounted on a rocket or satellite vehicle traversing the inospheric regions of interest. The changes of antenna impedance can be related to the electron density of the surrounding plasma through use of suitable theoretical development of the antenna-plasma interaction. It is the purpose of this treatise to develop a more general expression for the impedance of an antenna in the ionosphere to be useful as an RF probe for measurement of electron density. The investigation of ionospheric plasma characteristics by means of such RF probes has received a great deal of attention since the advent of the rocket allowed direct measurements within the ionosphere.

RF Circuit Design

RF Circuit Design
Author: Christopher Bowick
Publisher: Elsevier
Total Pages: 177
Release: 2014-06-28
Genre: Technology & Engineering
ISBN: 0080516289
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Essential reading for experts in the field of RF circuit design and engineers needing a good reference. This book provides complete design procedures for multiple-pole Butterworth, Chebyshev, and Bessel filters. It also covers capacitors, inductors, and other components with their behavior at RF frequencies discussed in detail. Provides complete design procedures for multiple-pole Butterworth, Chebyshev, and Bessel filters Covers capacitors, inductors, and other components with their behavior at RF frequencies discussed in detail

Impedance Spectroscopy

Impedance Spectroscopy
Author: Evgenij Barsoukov
Publisher: John Wiley & Sons
Total Pages: 498
Release: 2018-05-01
Genre: Science
ISBN: 1119074088
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The Essential Reference for the Field, Featuring Protocols, Analysis, Fundamentals, and the Latest Advances Impedance Spectroscopy: Theory, Experiment, and Applications provides a comprehensive reference for graduate students, researchers, and engineers working in electrochemistry, physical chemistry, and physics. Covering both fundamentals concepts and practical applications, this unique reference provides a level of understanding that allows immediate use of impedance spectroscopy methods. Step-by-step experiment protocols with analysis guidance lend immediate relevance to general principles, while extensive figures and equations aid in the understanding of complex concepts. Detailed discussion includes the best measurement methods and identifying sources of error, and theoretical considerations for modeling, equivalent circuits, and equations in the complex domain are provided for most subjects under investigation. Written by a team of expert contributors, this book provides a clear understanding of impedance spectroscopy in general as well as the essential skills needed to use it in specific applications. Extensively updated to reflect the field’s latest advances, this new Third Edition: Incorporates the latest research, and provides coverage of new areas in which impedance spectroscopy is gaining importance Discusses the application of impedance spectroscopy to viscoelastic rubbery materials and biological systems Explores impedance spectroscopy applications in electrochemistry, semiconductors, solid electrolytes, corrosion, solid state devices, and electrochemical power sources Examines both the theoretical and practical aspects, and discusses when impedance spectroscopy is and is not the appropriate solution to an analysis problem Researchers and engineers will find value in the immediate practicality, while students will appreciate the hands-on approach to impedance spectroscopy methods. Retaining the reputation it has gained over years as a primary reference, Impedance Spectroscopy: Theory, Experiment, and Applications once again present a comprehensive reference reflecting the current state of the field.

Medical and Biological Microwave Sensors and Systems

Medical and Biological Microwave Sensors and Systems
Author: Isar Mostafanezhad
Publisher: Cambridge University Press
Total Pages: 288
Release: 2017-12-07
Genre: Technology & Engineering
ISBN: 1316982602
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In this comprehensive work, experts in the field detail recent advances in medical and biological microwave sensors and systems, with chapters on topics such as implantable sensors, wearable microwave tags, and UWB technology. Each chapter explores the theory behind the technology, as well as its design and implementation. This is supported by practical examples and details of experimental results, along with discussion of system design, design trade-offs, and possible constraints and manufacturing issues. Applications described include intracranial pressure monitoring, vital signs monitoring, and non-invasive molecular and cellular investigations. Presenting new research and advances in the field, and focusing on the state of the art in medical and biological microwave sensors, this work is an invaluable resource for enthusiastic researchers and practicing engineers in the fields of electrical engineering, biomedical engineering, and medical physics.